ETC Request ID: STIS.ta.1010956

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.6144 seconds

gives: Time to Saturation (for a single exposure) = 95.02 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 3,366.402 2,068.40 45.48
    Background 0.597 0.37 0.61
        Sky 0.435 0.27 0.52
        Dark Current 0.162 0.10 0.32
    Read Out 24.60
Total in selected region 3,366.999 2,068.77 51.71
Brightest Pixel (single exposure) 1,262.848 775.93
Global Count Rates
    Source only 6,732.804 4,136.803
    Background (sky+dark) 46,585.728 28,623.44
Background per unit area
    Sky Background (arcsec-2) 19.330 11.877
    Dark Current (arcsec-2) 7.200 4.424
Extraction region
box of 3 x 3 pixels
    Effective Sky Area (pixels) 9.00
    Fraction of flux 0.50
    Fraction of flux in brightest pixel 0.19
Effective Wavelength 7234.54 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Kurucz Models K0V 5250 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 15.4 in filter Johnson/R
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

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These results were computed using: ETC version 25.2